Finding the Fourth Proportional to 256,786.41, 354,413.89 and 172,050.69

Step by Step Solution

1. Step 1: Write the proportion equation
   256,786.41 : 354,413.89 = 172,050.69 : x
2. Step 2: Convert to fraction form
   256,786.41/354,413.89 = 172,050.69/x
3. Step 3: Cross multiply
   256,786.41x = 354,413.89 × 172,050.69
4. Step 4: Simplify right side
   256,786.41x = 60,977,154,320.08
5. Step 5: Solve for x
   x = 60,977,154,320.08/256,786.41
6. Step 6: Final answer
   x = 237,462.54